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Method and apparatus for reliable session migration

A technology of equipment and communication sessions, applied in the direction of sustainable buildings, climate sustainability, sustainable communication technology, etc., can solve the problems of increasing delay and achieve the effect of increasing the total throughput

Active Publication Date: 2014-05-28
ALCATEL LUCENT SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As can be understood, this solution adds latency, since on the sending side all packets have to be blocked to calculate the range and checksum before these values ​​are inserted on the first packet of the block

Method used

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  • Method and apparatus for reliable session migration
  • Method and apparatus for reliable session migration
  • Method and apparatus for reliable session migration

Examples

Experimental program
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Embodiment Construction

[0021] figure 1 An exemplary reliable transport session system 100 is shown. The reliable transport session system 100 includes two end nodes 110-1 and 110-2 that use a multipath communication protocol to transmit data between the two nodes. The multi-path communication protocol supports endpoint migration of flow-oriented sessions over multiple paths 120-1 and 120-2.

[0022] The two end nodes 110-1 and 110-2 are configured to communicate packet data from one end node to the other via a stream-oriented transport mechanism. A stream-oriented transport mechanism may include a suitable protocol, such as TCP or SCTP, to establish a stream-oriented session. A stream-oriented session can establish bi-directional communication between end nodes 110-1 and 110-2, and at any point in time, end node 110-1 or 110-2 can act as a transmitter or receiver of packet data as appropriate.

[0023] End node 110-1 may use various access networks to participate in a communication session with e...

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PUM

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Abstract

Various embodiments provide a reliable session migration method and apparatus without requiring additional option headers to each packet or inducing transmission delay. This is achieved by utilizing aggregated checksums that facilitate session migration upon a migration event. Advantageously, some such embodiments may permit applications to continue when the endpoint device physically moves from one access network. Similarly, some such embodiments may allow dynamic migration access networks based on load, pricing or other factors. Moreover, some such embodiments may permit traffic to be split along multiple paths so as to increase the aggregate throughput.

Description

technical field [0001] The present invention generally relates to a method and apparatus for providing reliable session migration. Background technique [0002] This section introduces aspects that may contribute to a better understanding of the invention. Therefore, the statements in this section should be understood from this perspective, and should not be understood as an admission of what is or is not prior art. [0003] There are various technologies that support endpoint migration of flow-oriented IP-based transport sessions through the access network. Some of these techniques implement session endpoints at the transport layer by introducing additional alternative sequence number and checksum schemes. This alternative sequence number and checksum may be included in an additional Transport Layer Options header that applies on all data regardless of the path it traverses. Alternative sequence numbering schemes allow ordering of packets arriving from different paths. ...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L47/41
CPCH04L69/14H04L69/16Y02B60/33Y02D30/50H04L67/145H04L67/148
Inventor K·G·哈姆佩尔
Owner ALCATEL LUCENT SAS